1963 ford 4000 diesel pushing oil out dip stick

I have a 1963 Ford 4000 diesel tractor that is has bad blow by and pushing oil out of the dip stick. I changed the oil and filter, I have replaced all seals and gaskets, checked the oil pan. The problem I just fixed was it was mixing diesel fuel with the oil and still pushing it out of the dip stick. I got that fixed but can"t get the oil problem figured out. Any thoughts helpful. This tractor was my wife"s grandpa"s we are just trying to get it up and running again for him.

How's the breather cap on the top of the engine - Ususally on the top of valve cover. Not familiar with that model.

That cap was missing the screen I replaced that and it still pushes leaks oil out around it some, I'm not sure why, no one around here knows anything about them and I can't find anything online, hoping someone else has had the same problem before.

If, as you said, it has blow-by bad enough to force oil out of the breather the engine is very well worn and/or it has a bad case of ether fever.

Correction will require a major overhaul.

Dean

The breather on the side of the rocker cover needs to have the hole pointed up, and there should be a Brillo pad looking element inside the breather cap. There is a small hole in the side of the rocker cover that I believe is to allow oil in the breather to run back inside the engine rather than down the outside of it.

If you install the breather cap with the hole pointed down, it will make quite a mess on the side of the engine. How do you suppose I know that?!!

All engines produce some blow-by. Worn engines produce more than new engines. With the Ford 4 cylinder diesel, that excess pressure is supposed to go through the pushrod holes through the cylinder head to exit through the breather. I would wonder if your engine is all sludged up, not allowing the blow-by vapor to go from the crankcase through the head and out the breather like it should. If you have not changed the oil yet, that would be the first thing to try. You also might want to remove a side cover, to see if there is sludge buildup around the lifters, and maybe remove the rocker cover to see what that area looks like. You will probably need new gaskets for anything you remove, so I suggest getting them beforehand.

When I got my 641D, it was slobbering oil droplets through the exhaust pretty bad and leaking oil from the rocker cover. I replaced the rocker cover gasket (no sludge at all), and that fixed a lot of the oil leaking, but the droplets kept getting me and the tractor messy.

Finally I needed to do some plowing. I worked the tractor very hard for several hours, causing it to get fairly hot. It popped many chunks of hard material out of the exhaust, some of them red hot, which would have been dangerous if it had been in the dry part of the year. But working the tractor hard for a couple of hours seemed to cause it to work MUCH better. I would guess that it "blew the carbon" out of the exhaust system and made it breathe much better. No more oil droplets from the exhaust. Working the tractor hard also seemed to reduce the amount of blow-by.

Hope this helps you. Good luck!

You may have put us onto something. With that vintage of tractor and sitting up, what you may have is a carbonized combustion chamber which results in gunked up rings among other things.

They make fuel and oil treatments to decarbonize engines. I know Marvel Mystery Oil, been around for 50+ years treats gas and diesel engines. You can use it in the oil and in the fuel. It's really not an oil, more of a solvent. Directions are on the container. Most all auto parts stores and WW has it. Follow directions on the container.

Get a case of oil and handful of filters. Be sure and use oil rated for C service, not just S. Look on the back of the container. C is rated for compression engines and S for spark. It may say something like C4/SJ. When the oil gets dirty, change it and the filter. Chevron Delo, Shell Rotella T are a couple of good ones. Keep the treatment up till you are convinced you are there or fighting a loosing battle.

Make getting it out and working good part of the process. Hook it up to an 8' disc harrow, or 2 bottom moldboard. Run it fast as is reasonable. A 6' shredder in high grass going at a good clip. You may resurrect this tractor with minumum effort.

I have a '63 2000 4 cyl diesel with 3500+ hours and it was doing a lot of smoking; not your problem but still solvent related. I used some Diesel conditioner made for cleaning up injectors and upper cylinders; bought on same isle as MMO. Used it for awhile and exhaust smokes very little now.

As stated, oil blowing out the engine is nothing but engine compression blowing around the rings and out any opening it can find.

HTH,
Mark

What do you mean by "changed all seals and gaskets"? Does that mean a total rebuild? What do you mean by "problem just fixed? A fairly common problem with these is return fuel leaking under the valve cover. Have you run it with the valve cover off to check for leaks?

Check fuel return line from each injector. They have been known to crack.

Work the snot out of the tractor to cure slobbering and blow by if a history of light use.

no I haven't but I will, I have replaced all the seals in the full and totally rebuilt it, replaced the oil pan gasket. thanks

thanks I will try this

Yes, after you soften up the carbon with chemicals.

Mark